forked from metamath/metamath-exe
-
Notifications
You must be signed in to change notification settings - Fork 0
/
mmword.c
612 lines (552 loc) · 18.8 KB
/
mmword.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
/*****************************************************************************/
/* Copyright (C) 2012 NORMAN MEGILL nm at alum.mit.edu */
/* License terms: GNU General Public License */
/*****************************************************************************/
/*34567890123456 (79-character line to adjust editor window) 2345678901234567*/
/* This file implements the UPDATE command of the TOOLS utility. revise() is
the main external call; see the comments preceding it. */
/* The UPDATE command of TOOLS (mmword.c) was custom-written in accordance
with the version control requirements of a company that used it. It
documents the differences between two versions of a program as C-style
comments embedded in the newer version. The best way to determine whether
it suits your similar needs is just to run it and look at its output. */
/* Very old history: this was called mmword.c because it was intended to
produce RTF output for Word, analogous to the existing LaTeX output.
Microsoft never responded to a request for the RTF specification, as they
promised in the circa 1990 manual accompanying Word. Thus it remained an
empty shell. When the need for UPDATE arose, the mmword.c shell was used in
order to avoid the nuisance of changing some compilation setups and scripts
existing at that time. */
#include <string.h>
#include <stdio.h>
#include <limits.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include <setjmp.h>
#include "mmvstr.h"
#include "mmdata.h"
#include "mminou.h"
#include "mmword.h"
/* Set to 79, 80, etc. - length of line after tag is added */
#define LINE_LENGTH 80
/* 7000 ! ***** "DIFF" Option ***** from DO LIST */
/* gosub_7000(f1_name, f2_name, f3_name, &f3_fp, m); */
char strcmpe(vstring s1, vstring s2);
vstring stripAndTag(vstring line, vstring tag, flag tagBlankLines);
long r0,r1,r2,i0,i1_,i2_,d,t,i9;
FILE *f1_fp_;
FILE *f2_fp_;
FILE *f3_fp_;
char eof1, eof2;
vstring ctlz_ = "";
vstring l1_ = "";
vstring l2_ = "";
vstring tmp_ = "";
vstring tmpLine = "";
vstring addTag_ = "";
vstring delStartTag_ = "";
vstring delEndTag_ = "";
flag printedAtLeastOne;
/* Declare input and save buffers */
#define MAX_LINES 10000
#define MAX_BUF 1000
vstring line1_[MAX_LINES];
vstring line2_[MAX_LINES];
vstring reserve1_[MAX_BUF];
vstring reserve2_[MAX_BUF];
/* revise() is called by the UPDATE command of TOOLs. The idea is to
keep all past history of a file in the file itself, in the form of
comments. In mmcmds.c, see the parsing of the UPDATE command for a
partial explanation of its arguments. UPDATE was written for a
proprietary language with C-style comments (where nested comments were
allowed) and it may not be generally useful without some modification. */
void revise(FILE *f1_fp, FILE *f2_fp, FILE *f3_fp, vstring addTag, long m)
{
/******** Figure out the differences (DO LIST subroutine) ******/
vstring blanksPrefix = "";
long tmpi;
long i, j;
f1_fp_ = f1_fp;
f2_fp_ = f2_fp;
f3_fp_ = f3_fp;
let(&addTag_, addTag);
let(&delStartTag_, "/******* Start of deleted section *******");
let(&delEndTag_, "******* End of deleted section *******/");
/* Initialize vstring arrays */
for (i = 0; i < MAX_LINES; i++) {
line1_[i] = "";
line2_[i] = "";
}
for (i = 0; i < MAX_BUF; i++) {
reserve1_[i] = "";
reserve2_[i] = "";
}
if (m < 1) m = 1;
r0=r1=r2=i0=i1_=i2_=d=t=i=j=i9=0;
let(&ctlz_,chr(26)); /* End-of-file character */
let(&l1_,ctlz_);
let(&l2_,ctlz_);
eof1=eof2=0; /* End-of-file flags */
d=0;
l7100: /*
Lines 7100 through 7300 are a modified version of the compare loop
In DEC's FILCOM.BAS program.
*/
if (!strcmpe(l1_,l2_)) { /* The lines are the same */
if (strcmpe(l2_,ctlz_)) {
fprintf(f3_fp_, "%s\n", l2_); /* Use edited version
of line when they are the same */
}
gosub_7320();
gosub_7330();
if (strcmpe(l1_,ctlz_) || strcmpe(l2_,ctlz_) ) {
goto l7100;
} else {
fclose(f1_fp_);
fclose(f2_fp_);
fclose(f3_fp_);
/* Deallocate string memory */
for (i = 0; i < MAX_LINES; i++) {
let(&(line1_[i]), "");
let(&(line2_[i]), "");
}
for (i = 0; i < MAX_BUF; i++) {
let(&(reserve1_[i]), "");
let(&(reserve2_[i]), "");
}
let(&ctlz_, "");
let(&l1_, "");
let(&l2_, "");
let(&tmp_, "");
let(&tmpLine, "");
let(&addTag_, "");
let(&delStartTag_, "");
let(&delEndTag_, "");
let(&blanksPrefix, "");
return;
}
}
d=d+1; /* Number of difference sections found so far
(For user information only) */
i1_=i2_=m-1;
let(&line1_[0],l1_);
let(&line2_[0],l2_);
for (i0 = 1; i0 < m; i0++) {
gosub_7320();
let(&line1_[i0],l1_);
}
for (i0 = 1; i0 < m; i0++) {
gosub_7330();
let(&line2_[i0],l2_);
}
l7130: gosub_7320();
i1_=i1_+1;
if (i1_ >= MAX_LINES) {
printf("*** FATAL *** Overflow#1\n");
#if __STDC__
fflush(stdout);
#endif
exit(0);
}
let(&line1_[i1_],l1_);
t=0;
i=0;
l7140: if (strcmpe(line1_[i1_+t-m+1], line2_[i+t])) {
t=0;
} else {
/* If lines "match", ensure we use the EDITED version for the
final output */
let(&line1_[i1_+t-m+1], line2_[i+t]);
t=t+1;
if (t==m) {
goto l7200;
} else {
goto l7140;
}
}
i=i+1;
if (i<=i2_-m+1) {
goto l7140;
}
gosub_7330();
i2_=i2_+1;
if (i2_ >= MAX_LINES) {
printf("*** FATAL *** Overflow#2\n");
#if __STDC__
fflush(stdout);
#endif
exit(0);
}
let(&line2_[i2_],l2_);
t=0;
i=0;
l7170:
if (strcmpe(line1_[i+t], line2_[i2_+t-m+1])) {
t=0;
} else {
/* If lines "match", ensure we use the EDITED version for the
final output */
let(&line1_[i+t], line2_[i2_+t-m+1]);
t=t+1;
if (t==m) {
goto l7220;
} else {
goto l7170;
}
}
i=i+1;
if (i<=i1_-m+1) {
goto l7170;
}
goto l7130;
l7200: i=i+m-1;
if (r2) {
for (j=r2-1; j>=0; j--) {
let(&reserve2_[j+i2_-i],reserve2_[j]);
}
}
for (j=1; j<=i2_-i; j++) {
let(&reserve2_[j-1],line2_[j+i]);
}
r2=r2+i2_-i;
if (r2 >= MAX_BUF) {
printf("*** FATAL *** Overflow#3\n");
#if __STDC__
fflush(stdout);
#endif
exit(0);
}
i2_=i;
goto l7240;
l7220: i=i+m-1;
if (r1) {
for (j=r1-1; j>=0; j--) {
let(&reserve1_[j+i1_-i],reserve1_[j]);
}
}
for (j=1; j<=i1_-i; j++) {
let(&reserve1_[j-1],line1_[j+i]);
}
r1=r1+i1_-i;
if (r1 >= MAX_BUF) {
printf("*** FATAL *** Overflow#4\n");
#if __STDC__
fflush(stdout);
#endif
exit(0);
}
i1_=i;
goto l7240;
l7240: /* */
printedAtLeastOne = 0;
for (i=0; i<=i1_-m; i++) {
if (strcmpe(line1_[i],ctlz_)) {
if (!printedAtLeastOne) {
printedAtLeastOne = 1;
/* Put out any blank lines before delStartTag_ */
while (((vstring)(line1_[i]))[0] == '\n') {
fprintf(f3_fp_, "\n");
let(&(line1_[i]), right(line1_[i], 2));
}
/* Find the beginning blank space */
tmpi = 0;
while (((vstring)(line1_[i]))[tmpi] == ' ') tmpi++;
let(&blanksPrefix, space(tmpi));
let(&tmpLine, "");
tmpLine = stripAndTag(cat(blanksPrefix, delStartTag_, NULL),
addTag_, 0);
fprintf(f3_fp_, "%s\n", tmpLine);
}
fprintf(f3_fp_, "%s\n", line1_[i]);
/* Output original deleted lines */
/*let(&tmp_, "");*/ /* Clear vstring stack */
}
}
if (printedAtLeastOne) {
let(&tmpLine, "");
tmpLine = stripAndTag(cat(blanksPrefix, delEndTag_, NULL), addTag_
,0);
fprintf(f3_fp_, "%s\n", tmpLine);
}
for (i=0; i<=i1_-m; i++) {
if (i<=i2_-m) {
if (strcmpe(line2_[i],ctlz_)) {
let(&tmpLine, "");
if (i == 0) {
tmpLine = stripAndTag(line2_[i], addTag_, 0);
} else {
/* Put tags on blank lines *inside* of new section */
tmpLine = stripAndTag(line2_[i], addTag_, 1);
}
fprintf(f3_fp_, "%s\n", tmpLine);
/* Output tagged edited lines */
/*let(&tmp_, "");*/ /* Clear vstring stack */
}
}
}
for (i=i1_-m+1; i<=i2_-m; i++) {
if (strcmpe(line2_[i],ctlz_)) {
let(&tmpLine, "");
if (i == 0) {
tmpLine = stripAndTag(line2_[i], addTag_, 0);
} else {
/* Put tags on blank lines *inside* of new section */
tmpLine = stripAndTag(line2_[i], addTag_, 1);
}
fprintf(f3_fp_, "%s\n", tmpLine);
/* Print remaining edited lines */
/*let(&tmp_, "");*/ /* Clear vstring stack */
}
}
for (i=0; i<=m-1; i++) {
let(&l1_,line1_[i1_-m+1+i]);
if (strcmpe(l1_,ctlz_)) {
fprintf(f3_fp_,"%s\n",l1_); /* Print remaining matching lines */
}
}
let(&l1_,ctlz_);
let(&l2_,ctlz_);
goto l7100;
}
void gosub_7320()
{
/* Subroutine: get next L1_ from original file */
vstring tmpLin = "";
if (r1) { /* Get next line from save array */
let(&l1_,reserve1_[0]);
r1=r1-1;
for (i9=0; i9<=r1-1; i9++) {
let(&reserve1_[i9],reserve1_[i9+1]);
}
} else { /* Get next line from input file */
if (eof1) {
let(&l1_,ctlz_);
} else {
next_l1:
if (!linput(f1_fp_,NULL,&l1_)) { /*linput returns 0 if EOF */
eof1 = 1;
/* Note that we will discard any blank lines before EOF; this
should be OK though */
let(&l1_,ctlz_);
let(&tmpLin, ""); /* Deallocate */
return;
}
let(&l1_, edit(l1_, 4 + 128 + 2048)); /* Trim garb, trail space; untab */
if (!l1_[0]) { /* Ignore blank lines for comparison */
let(&tmpLin, cat(tmpLin, "\n", NULL)); /* Blank line */
goto next_l1;
}
}
}
let(&l1_, cat(tmpLin, l1_, NULL)); /* Add any blank lines */
let(&tmpLin, ""); /* Deallocate */
return;
}
void gosub_7330() {
/* Subroutine: get next L2_ from edited file */
vstring tmpLin = "";
vstring tmpStrPtr; /* pointer only */
flag stripDeletedSectionMode;
if (r2) { /* Get next line from save array */
let(&l2_,reserve2_[0]);
r2=r2-1;
for (i9 = 0; i9 < r2; i9++) {
let(&reserve2_[i9],reserve2_[i9+1]);
}
} else { /* Get next line from input file */
if (eof2) {
let(&l2_,ctlz_);
} else {
stripDeletedSectionMode = 0;
next_l2:
if (!linput(f2_fp_,NULL,&l2_)) { /* linput returns 0 if EOF */
eof2 = 1;
/* Note that we will discard any blank lines before EOF; this
should be OK though */
let(&l2_, ctlz_);
let(&tmpLin, ""); /* Deallocate */
return;
}
let(&l2_, edit(l2_, 4 + 128 + 2048)); /* Trim garb, trail space; untab */
if (!strcmp(edit(delStartTag_, 2), left(edit(l2_, 2 + 4),
(long)strlen(edit(delStartTag_, 2))))) {
if (getRevision(l2_) == getRevision(addTag_)) {
/* We should strip out deleted section from previous run */
/* (The diff algorithm will put them back from orig. file) */
stripDeletedSectionMode = 1;
goto next_l2;
}
}
if (stripDeletedSectionMode) {
if (!strcmp(edit(delEndTag_, 2), left(edit(l2_, 2 + 4),
(long)strlen(edit(delEndTag_, 2)))) &&
getRevision(l2_) == getRevision(addTag_) ) {
stripDeletedSectionMode = 0;
}
goto next_l2;
}
/* Strip off tags that match *this* revision (so previous out-of-sync
runs will be corrected) */
if (getRevision(l2_) == getRevision(addTag_)) {
tmpStrPtr = l2_;
l2_ = stripAndTag(l2_, "", 0);
let(&tmpStrPtr, ""); /* deallocate old l2_ */
}
if (!l2_[0]) { /* Ignore blank lines for comparison */
let(&tmpLin, cat(tmpLin, "\n", NULL)); /* Blank line */
goto next_l2;
}
}
}
let(&l2_, cat(tmpLin, l2_, NULL)); /* Add any blank lines */
let(&tmpLin, ""); /* Deallocate */
return;
}
/* Return 0 if difference lines are the same, non-zero otherwise */
char strcmpe(vstring s1, vstring s2)
{
flag cmpflag;
/* Option flags - make global if we want to use them */
flag ignoreSpaces = 1;
flag ignoreSameLineComments = 1;
vstring tmps1 = "";
vstring tmps2 = "";
long i;
long i2;
long i3;
let(&tmps1, s1);
let(&tmps2, s2);
if (ignoreSpaces) {
let(&tmps1, edit(tmps1, 2 + 4));
let(&tmps2, edit(tmps2, 2 + 4));
}
if (ignoreSameLineComments) {
while (1) {
i = instr(1, tmps1, "/*");
if (i == 0) break;
i2 = instr(i + 2, tmps1, "*/");
if (i2 == 0) break;
i3 = instr(i + 2, tmps1, "/*");
if (i3 != 0 && i3 < i2) break; /*i = i3;*/ /* Nested comment */
if (i2 - i > 7) break; /* only ignore short comments (tags) */
let(&tmps1, cat(left(tmps1, i - 1), right(tmps1, i2 + 2), NULL));
}
while (1) {
i = instr(1, tmps2, "/*");
if (i == 0) break;
i2 = instr(i + 2, tmps2, "*/");
if (i2 == 0) break;
i3 = instr(i + 2, tmps2, "/*");
if (i3 != 0 && i3 < i2) break; /*i = i3;*/ /* Nested comment */
if (i2 - i > 7) break; /* only ignore short comments (tags) */
let(&tmps2, cat(left(tmps2, i - 1), right(tmps2, i2 + 2), NULL));
}
}
cmpflag = !!strcmp(tmps1, tmps2);
let(&tmps1, ""); /* Deallocate string */
let(&tmps2, ""); /* Deallocate string */
return (cmpflag);
}
/* Strip any old tag from line and put new tag on it */
/* (Caller must deallocate returned string) */
vstring stripAndTag(vstring line, vstring tag, flag tagBlankLines)
{
long i, j, k, n;
vstring line1 = "", comment = "";
long lineLength = LINE_LENGTH;
flag validTag;
i = 0;
let(&line1, edit(line, 128 + 2048)); /* Trim trailing spaces and untab */
/* Get last comment on line */
while (1) {
j = instr(i + 1, line1, "/*");
if (j == 0) break;
i = j;
}
j = instr(i, line1, "*/");
if (i && j == (signed)(strlen(line1)) - 1) {
let(&comment, seg(line1, i + 2, j - 1));
validTag = 1;
for (k = 0; k < (signed)(strlen(comment)); k++) {
/* Check for valid characters that can appear in a tag */
if (instr(1, " 1234567890#", mid(comment, k + 1, 1))) continue;
validTag = 0;
break;
}
if (validTag) let(&line1, edit(left(line1, i - 1), 128));
let(&comment, ""); /* deallocate */
}
/* Count blank lines concatenated to the beginning of this line */
n = 0;
while (line1[n] == '\n') n++;
/* Add the tag */
if (tag[0]) { /* Non-blank tag */
if ((long)strlen(line1) - n < lineLength - 1 - (long)strlen(tag))
let(&line1, cat(line1,
space(lineLength - 1 - (long)strlen(tag) - (long)strlen(line1) + n),
NULL));
let(&line1, cat(line1, " ", tag, NULL));
if ((signed)(strlen(line1)) - n > lineLength) {
print2(
"Warning: The following line has > %ld characters after tag is added:\n",
lineLength);
print2("%s\n", line1);
}
}
/* Add tags to blank lines if tagBlankLines is set */
/* (Used for blank lines inside of new edited file sections) */
if (tagBlankLines && n > 0) {
let(&line1, right(line1, n + 1));
for (i = 1; i <= n; i++) {
let(&line1, cat(space(lineLength - (long)strlen(tag)), tag, "\n",
line1, NULL));
}
}
return line1;
}
/* Get the largest revision number tag in a file */
/* Tags are assumed to be of format nn or #nn in comment at end of line */
/* Used to determine default argument for tag question */
long highestRevision(vstring fileName)
{
vstring str1 = "";
long revision;
long largest = 0;
FILE *fp;
fp = fopen(fileName, "r");
if (!fp) return 0;
while (linput(fp, NULL, &str1)) {
revision = getRevision(str1);
if (revision > largest) largest = revision;
}
let(&str1, "");
fclose(fp);
return largest;
}
/* Get numeric revision from the tag on a line (returns 0 if none) */
/* Tags are assumed to be of format nn or #nn in comment at end of line */
long getRevision(vstring line)
{
vstring str1 = "";
vstring str2 = "";
vstring tag = "";
long revision;
if (instr(1, line, "/*") == 0) return 0; /* Speedup - no comment in line */
let(&str1, edit(line, 2)); /* This line has the tag not stripped */
let(&str2, "");
str2 = stripAndTag(str1, "", 0); /* Strip old tag & add dummy new one */
let(&str2, edit(str2, 2)); /* This line has the tag stripped */
if (!strcmp(str1, str2)) {
revision = 0; /* No tag */
} else {
let(&tag, edit(seg(str1, (long)strlen(str2) + 3,
(long)strlen(str1) - 2), 2));
if (tag[0] == '#') let(&tag, right(tag, 2)); /* Remove any # */
revision = (long)(val(tag));
}
let(&tag, "");
let(&str1, "");
let(&str2, "");
return revision;
}